Port D Register (Portd); Port D Pull-Up Control Register (Pdpcr); 10.12.5 Pin Functions - Hitachi H8S/2378, H8S/2378R Series Hardware Manual

10.12.3 Port D Register (PORTD)

PORTD shows port D pin states.
PORTD cannot be modified.
Bit Bit Name
7 PD7
6 PD6
5 PD5
4 PD4
3 PD3
2 PD2
1 PD1
0 PD0
Note: Determined by the states of pins PD7 to PD0.

10.12.4 Port D Pull-up Control Register (PDPCR)

PDPCR controls on/off states of the input pull-up MOS of port D. PDPCR is valid in mode 7.
Bit Bit Name
7 PD7PCR
6 PD6PCR
5 PD5PCR
4 PD4PCR
3 PD3PCR
2 PD2PCR
1 PD1PCR
0 PD0PCR

10.12.5 Pin Functions

Port D pins also function as the pins for data I/Os. The correspondence between the register
specification and the pin functions is shown below.
Initial Value R/W
R
—*
R
—*
R
—*
R
—*
R
—*
R
—*
R
—*
R
—*
Initial Value R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
Description
If a port D read is performed while PDDDR bits are
set to 1, the PDDR values are read. If a port D read
is performed while PDDDR bits are cleared to 0, the
pin states are read.
Description
When PDDDR = 0 (input port), the input pull-up MOS
of the input pin is on when the corresponding bit is
set to 1.
Rev. 1.0, 09/01, page 469 of 904